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经营范围
发明名称
Improvements in or relating to magnetic dust cores
摘要
申请公布号
GB621013(A)
申请公布日期
1949.04.01
申请号
GB19470004065
申请日期
1947.02.12
申请人
THE GENERAL ELECTRIC COMPANY LIMITED;ALFRED DAVID THOMAS
发明人
分类号
H01F1/26
主分类号
H01F1/26
代理机构
代理人
主权项
地址
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